1. Developmentally appropriate practice in early childhood programs serving children from birth through age 8,1987
2. Setting and maintaining professional standards;Bredekamp,1990
3. Young children continue to reinvent arithmetic: 2nd grade;Kamii,1989
4. Implementing developmentally appropriate practices in the 1990s: From “common parlance” to “common practice”;Katz,1990
5. Pedagogical issues in early childhood education;Katz,1991